2051512605 has 48 divisors (see below), whose sum is σ = 3657363840. Its totient is φ = 1063330944.

The previous prime is 2051512601. The next prime is 2051512643. The reversal of 2051512605 is 5062151502.

2051512605 is a `hidden beast` number, since 2 + 0 + 5 + 1 + 51 + 2 + 605 = 666.

It is not a de Polignac number, because 2051512605 - 2² = 2051512601 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2051512601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 251176 + ... + 259214.

It is an arithmetic number, because the mean of its divisors is an integer number (76195080).

Almost surely, 2^2051512605 is an apocalyptic number.

It is an amenable number.

2051512605 is a deficient number, since it is larger than the sum of its proper divisors (1605851235).

2051512605 is a wasteful number, since it uses less digits than its factorization.

2051512605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8210 (or 8207 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The square root of 2051512605 is about 45293.6265383994. The cubic root of 2051512605 is about 1270.6464572105.

The spelling of 2051512605 in words is "two billion, fifty-one million, five hundred twelve thousand, six hundred five".